Implement Font Scaling Quick Settings Tile (3/n)

Setup the basic layout of the dialog that would show up after clicking
the font scaling tile. The dialog includes the Title, the Done button,
and a seekbar which allows users to change the font size.

Bug: 242326166
Test: Attach a video to the bug
Test: atest FontScalingTileTest
Change-Id: I53db74af00e358a5e35283128a11164d4ae6733e

packages/SystemUI/res/layout/font_scaling_dialog.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2023 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<com.android.systemui.common.ui.view.SeekBarWithIconButtonsView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/font_scaling_slider"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_gravity="center"
+    app:max="6"
+    app:progress="0"
+    app:iconStartContentDescription="@string/font_scaling_smaller"
+    app:iconEndContentDescription="@string/font_scaling_larger"/>

packages/SystemUI/res/values/strings.xml

@@ -2183,6 +2183,14 @@
     <!-- Title of the overlay warning the user to interact with the device or it will go to sleep. [CHAR LIMIT=25] -->
     <string name="inattentive_sleep_warning_title">Standby</string>
 
+    <!-- Font scaling -->
+    <!-- Font scaling: Quick Settings dialog title [CHAR LIMIT=30] -->
+    <string name="font_scaling_dialog_title">Font Size</string>
+    <!-- Content Description for the icon button to make fonts smaller. [CHAR LIMIT=30] -->
+    <string name="font_scaling_smaller">Make smaller</string>
+    <!-- Content Description for the icon button to make fonts larger. [CHAR LIMIT=30] -->
+    <string name="font_scaling_larger">Make larger</string>
+
     <!-- Window Magnification strings -->
     <!-- Title for Magnification Window [CHAR LIMIT=NONE] -->
     <string name="magnification_window_title">Magnification Window</string>

packages/SystemUI/src/com/android/systemui/accessibility/fontscaling/FontScalingDialog.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.systemui.accessibility.fontscaling
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import com.android.systemui.R
+import com.android.systemui.statusbar.phone.SystemUIDialog
+
+/** The Dialog that contains a seekbar for changing the font size. */
+class FontScalingDialog(context: Context) : SystemUIDialog(context) {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        setTitle(R.string.font_scaling_dialog_title)
+        setView(LayoutInflater.from(context).inflate(R.layout.font_scaling_dialog, null))
+        setPositiveButton(
+            R.string.quick_settings_done,
+            /* onClick = */ null,
+            /* dismissOnClick = */ true
+        )
+        super.onCreate(savedInstanceState)
+    }
+}

packages/SystemUI/src/com/android/systemui/qs/tiles/FontScalingTile.kt

@@ -19,8 +19,12 @@ import android.content.Intent
 import android.os.Handler
 import android.os.Looper
 import android.view.View
+import com.android.internal.jank.InteractionJankMonitor
 import com.android.internal.logging.MetricsLogger
 import com.android.systemui.R
+import com.android.systemui.accessibility.fontscaling.FontScalingDialog
+import com.android.systemui.animation.DialogCuj
+import com.android.systemui.animation.DialogLaunchAnimator
 import com.android.systemui.dagger.qualifiers.Background
 import com.android.systemui.dagger.qualifiers.Main
 import com.android.systemui.plugins.ActivityStarter
@@ -30,6 +34,7 @@ import com.android.systemui.plugins.statusbar.StatusBarStateController
 import com.android.systemui.qs.QSHost
 import com.android.systemui.qs.logging.QSLogger
 import com.android.systemui.qs.tileimpl.QSTileImpl
+import com.android.systemui.statusbar.phone.SystemUIDialog
 import javax.inject.Inject
 
 class FontScalingTile
@@ -42,7 +47,8 @@ constructor(
     metricsLogger: MetricsLogger,
     statusBarStateController: StatusBarStateController,
     activityStarter: ActivityStarter,
-    qsLogger: QSLogger
+    qsLogger: QSLogger,
+    private val dialogLaunchAnimator: DialogLaunchAnimator
 ) :
     QSTileImpl<QSTile.State?>(
         host,
@@ -54,7 +60,7 @@ constructor(
         activityStarter,
         qsLogger
     ) {
-    private val mIcon = ResourceIcon.get(R.drawable.ic_qs_font_scaling)
+    private val icon = ResourceIcon.get(R.drawable.ic_qs_font_scaling)
 
     override fun isAvailable(): Boolean {
         return false
@@ -66,11 +72,24 @@ constructor(
         return state
     }
 
-    override fun handleClick(view: View?) {}
+    override fun handleClick(view: View?) {
+        mUiHandler.post {
+            val dialog: SystemUIDialog = FontScalingDialog(mContext)
+            if (view != null) {
+                dialogLaunchAnimator.showFromView(
+                    dialog,
+                    view,
+                    DialogCuj(InteractionJankMonitor.CUJ_SHADE_DIALOG_OPEN, INTERACTION_JANK_TAG)
+                )
+            } else {
+                dialog.show()
+            }
+        }
+    }
 
     override fun handleUpdateState(state: QSTile.State?, arg: Any?) {
         state?.label = mContext.getString(R.string.quick_settings_font_scaling_label)
-        state?.icon = mIcon
+        state?.icon = icon
     }
 
     override fun getLongClickIntent(): Intent? {
@@ -80,4 +99,8 @@ constructor(
     override fun getTileLabel(): CharSequence {
         return mContext.getString(R.string.quick_settings_font_scaling_label)
     }
+
+    companion object {
+        private const val INTERACTION_JANK_TAG = "font_scaling"
+    }
 }

packages/SystemUI/tests/src/com/android/systemui/qs/tiles/dialog/FontScalingTileTest.kt

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.systemui.qs.tiles.dialog
+
+import android.os.Handler
+import android.testing.AndroidTestingRunner
+import android.testing.TestableLooper
+import androidx.test.filters.SmallTest
+import com.android.internal.logging.MetricsLogger
+import com.android.systemui.SysuiTestCase
+import com.android.systemui.animation.DialogLaunchAnimator
+import com.android.systemui.classifier.FalsingManagerFake
+import com.android.systemui.plugins.ActivityStarter
+import com.android.systemui.plugins.statusbar.StatusBarStateController
+import com.android.systemui.qs.QSTileHost
+import com.android.systemui.qs.logging.QSLogger
+import com.android.systemui.qs.tiles.FontScalingTile
+import com.google.common.truth.Truth.assertThat
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mock
+import org.mockito.Mockito.`when`
+import org.mockito.MockitoAnnotations
+
+@RunWith(AndroidTestingRunner::class)
+@TestableLooper.RunWithLooper(setAsMainLooper = true)
+@SmallTest
+class FontScalingTileTest : SysuiTestCase() {
+    @Mock private lateinit var qsHost: QSTileHost
+    @Mock private lateinit var metricsLogger: MetricsLogger
+    @Mock private lateinit var statusBarStateController: StatusBarStateController
+    @Mock private lateinit var activityStarter: ActivityStarter
+    @Mock private lateinit var qsLogger: QSLogger
+    @Mock private lateinit var dialogLaunchAnimator: DialogLaunchAnimator
+
+    private lateinit var testableLooper: TestableLooper
+    private lateinit var fontScalingTile: FontScalingTile
+
+    @Before
+    fun setUp() {
+        MockitoAnnotations.initMocks(this)
+        testableLooper = TestableLooper.get(this)
+        `when`(qsHost.getContext()).thenReturn(mContext)
+        fontScalingTile =
+            FontScalingTile(
+                qsHost,
+                testableLooper.looper,
+                Handler(testableLooper.looper),
+                FalsingManagerFake(),
+                metricsLogger,
+                statusBarStateController,
+                activityStarter,
+                qsLogger,
+                dialogLaunchAnimator
+            )
+        fontScalingTile.initialize()
+    }
+
+    @Test
+    fun isNotAvailable_whenNotSupportedDevice_returnsFalse() {
+        val isAvailable = fontScalingTile.isAvailable()
+
+        assertThat(isAvailable).isFalse()
+    }
+}